<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <link rel="stylesheet" href="../bootstrap/css/bootstrap.css">
</head>
<body>

<div class="btn-group" role="group" aria-label="Basic radio toggle button group">
    <input type="radio" class="btn-check" name="btnradio" id="btnradio1" autocomplete="off" checked>
    <label class="btn btn-outline-primary" for="btnradio1">Radio 1</label>

    <input type="radio" class="btn-check" name="btnradio" id="btnradio2" autocomplete="off">
    <label class="btn btn-outline-primary" for="btnradio2">Radio 2</label>

    <input type="radio" class="btn-check" name="btnradio" id="btnradio3" autocomplete="off">
    <label class="btn btn-outline-primary" for="btnradio3">Radio 3</label>
</div>

<script src="../bootstrap/js/bootstrap.js"></script>
</body>
</html>